onenote form - calculating time

[Levi]

Any suggestions on the proper function or syntax for calculating the
difference in time on a time card form for one note? Can't seem to get
anything obvious to work and cannot find any extended documentation on such a
calculation.

 

[Levi]

I reposted this correctly as a question about InfoPath, not onenote. I guess
the 1tth was a long day.